fox's bret larson plains how to do that. >> reporter: college, a time to studdie and a time to make a little extra cash. >> if you have good notes that you are already taking anyway for class, you can upload them and get points from the notes and with the points, you can get money. >> reporter: you heard right. carolyn sang is taking and sharing notes on-line and make a little extra money on the side with a new web site grade guru.com. >> you can find notes from people at your school who are taking the same class with the same professor. so can you literally just be study for the same test. >> what we are doing is rewarding what we think are the academic thought leaders so students who have great notes and are prepared to share their effective study methods with others get reward by points. students, when they're struggling or a little bit unsure what is expected of them in their classes turn to their peers for help. >> reporter: in its infancy, grade guru has already become a popular spot for students to stop and sre notes and sees says. knowing someone is will be to pay a price for